Home / 9,370.17-12,931.11-5,178.42

Finding the Fourth Proportional to 9,370.17, 12,931.11 and 5,178.42

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Solution

The fourth proportional to 9,370.17, 12,931.11 and 5,178.42 is: 7,146.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,370.17 : 12,931.11 = 5,178.42 : x
  2. Step 2: Convert to fraction form
    9,370.17/12,931.11 = 5,178.42/x
  3. Step 3: Cross multiply
    9,370.17x = 12,931.11 × 5,178.42
  4. Step 4: Simplify right side
    9,370.17x = 66,962,718.65
  5. Step 5: Solve for x
    x = 66,962,718.65/9,370.17
  6. Step 6: Final answer
    x = 7,146.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.